| Inhumation | inhumation |
| Inhalation | inhalation |
| Inkubation | incubation |
| Intubation | intubation |
| inhuman | inhumane |
| Himation | himation |
| Animation | animation |
| Information | information |
| Infixation | infixation |
| Initiation | initiation |
| Nunation | nunation |
| Indikation | indication |
| Inflation | inflation |
| Innovation | innovation |
| Intonation | intonation |
| Inundation | flood |
| Nutation | nutation |
| Induktion | induction electromagnetic induction mathematical induction |
| Intuition | intuition |
| Inunktion | embrocation unction |